The climate of the Galapagos is very unlike that usually seen in the tropics. It is a very diverse and ever-changing environment, creating a basis for the presence of a range of species only found in this archipelago. Because of the Humboldt current, waters are relatively cold. The phenomenon known as “El niño” also has a big impact on the climate and conditions for animals.
The year is divided into 2 major seasons. The “hot season”, running from December through May, is generally characterized by warm and, at times, rainy weather. Average air temperature in the period ranges from aprox. 25°C to above 29°C (77°F to 84°F), with humidity from 65% to 80%. This is the season where the vast majority of land-based species (i.e. finches, land iguanas and tortoises) mate and reproduce. This is also the ideal season for snorkling and diving, as waters are calm and with high visibility.
The “dry season”, running from June through November, is generally characterized by dry and somewhat windy weather. Average air temperatures range from aprox. 23°C to somewhere above 25°C (74°F to 77°F), with humidity from 35% to 60%. Waters are usually slightly colder and therefore very rich in nutrients. Land-based animals with the sea as their main food-source mate and reproduce in this season.